/*
 * Copyright (c) 2010-2011, okazoh_tk. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  - Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  - Neither the name of the copyright holder nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "alkes/media/ImageWriter.h"

namespace alkes {

ImageWriter::ImageWriter()
{
}

ImageWriter::~ImageWriter()
{
}

bool ImageWriter::write(const PixelFormatTraits* traits, const void* pixels, int32_t pitch, int32_t width, int32_t height)
{
    if (!traits)
    {
        LOGE("Unknown format.");
        return false;
    }

    if (onBegin(traits, pitch, width, height))
    {
        int32_t y;
        int32_t length = traits->bytes * width;
        const uint8_t* p = (const uint8_t*)pixels;

        for (y = 0; y < height; ++y, p += pitch)
        {
            writeScanline(traits, p, length, width, y);
        }

        onEnd();
    }
    else
        return false;

    return true;
}

bool ImageWriter::writeDelegate(const PixelFormatTraits* traits, int32_t pitch, int32_t width, int32_t height, WriterDelegate* writer)
{
    if (!traits)
    {
        LOGE("Unknown format.");
        return false;
    }

    if (onBegin(traits, pitch, width, height))
    {
        writer->write(*this, traits, pitch, width, height);
        onEnd();
    }
    else
        return false;

    return true;
}

bool ImageWriter::onBegin(const PixelFormatTraits* /*traits*/, int32_t /*pitch*/, int32_t /*width*/, int32_t /*height*/)
{
    return true;
}

void ImageWriter::onEnd()
{
}

WriterDelegate::~WriterDelegate()
{
}

void WriterDelegate::invokeWriteScanline(ImageWriter& writer, const PixelFormatTraits* traits, const void* pixels, int32_t length, int32_t width, int32_t y)
{
    writer.writeScanline(traits, pixels, length, width, y);
}

}
